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   &#160;<span id="projectnumber">6.1.4</span>
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<div class="header">
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<div class="title">Class Hierarchy</div>  </div>
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<div class="textblock">
<p><a href="hierarchy.html">Go to the textual class hierarchy</a></p>
</div><table border="0" cellspacing="10" cellpadding="0">
<tr><td><img src="inherit_graph_0.png" border="0" alt="" usemap="#_qwt_abstract_scale"/>
<map name="_qwt_abstract_scale" id="_qwt_abstract_scale">
<area shape="rect" id="node2" href="class_qwt_abstract_scale.html" title="An abstract base class for widgets having a scale. " alt="" coords="131,107,259,133"/>
<area shape="rect" id="node10" href="class_qwt_counter.html" title="The Counter Widget. " alt="" coords="149,157,241,184"/>
<area shape="rect" id="node11" href="class_qwt_panner.html" title="QwtPanner provides panning of a widget. " alt="" coords="151,208,239,235"/>
<area shape="rect" id="node13" href="class_qwt_scale_widget.html" title="A Widget which contains a scale. " alt="" coords="134,259,257,285"/>
<area shape="rect" id="node14" href="class_qwt_wheel.html" title="The Wheel Widget. " alt="" coords="153,309,237,336"/>
<area shape="rect" id="node15" href="class_qwt_widget_overlay.html" title="An overlay for a widget. " alt="" coords="128,360,263,387"/>
<area shape="rect" id="node3" href="class_qwt_abstract_slider.html" title="An abstract base class for slider widgets with a scale. " alt="" coords="311,81,439,108"/>
<area shape="rect" id="node9" href="class_qwt_thermo.html" title="The Thermometer Widget. " alt="" coords="328,132,421,159"/>
<area shape="rect" id="node4" href="class_qwt_dial.html" title="QwtDial class provides a rounded range control. " alt="" coords="492,31,561,57"/>
<area shape="rect" id="node7" href="class_qwt_knob.html" title="The Knob Widget. " alt="" coords="489,81,565,108"/>
<area shape="rect" id="node8" href="class_qwt_slider.html" title="The Slider Widget. " alt="" coords="487,132,567,159"/>
<area shape="rect" id="node5" href="class_qwt_analog_clock.html" title="An analog clock. " alt="" coords="615,5,737,32"/>
<area shape="rect" id="node6" href="class_qwt_compass.html" title="A Compass Widget. " alt="" coords="625,56,727,83"/>
<area shape="rect" id="node12" href="class_qwt_plot_panner.html" title="QwtPlotPanner provides panning of a plot canvas. " alt="" coords="319,208,430,235"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_1.png" border="0" alt="" usemap="#_qwt_abstract_scale_draw"/>
<map name="_qwt_abstract_scale_draw" id="_qwt_abstract_scale_draw">
<area shape="rect" id="node1" href="class_qwt_abstract_scale_draw.html" title="A abstract base class for drawing scales. " alt="" coords="5,31,165,57"/>
<area shape="rect" id="node2" href="class_qwt_round_scale_draw.html" title="A class for drawing round scales. " alt="" coords="213,5,364,32"/>
<area shape="rect" id="node4" href="class_qwt_scale_draw.html" title="A class for drawing scales. " alt="" coords="233,56,345,83"/>
<area shape="rect" id="node3" href="class_qwt_compass_scale_draw.html" title="A special scale draw made for QwtCompass. " alt="" coords="412,5,583,32"/>
<area shape="rect" id="node5" href="class_qwt_date_scale_draw.html" title="A class for drawing datetime scales. " alt="" coords="427,56,568,83"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_2.png" border="0" alt="" usemap="#_qwt_arrow_button"/>
<map name="_qwt_arrow_button" id="_qwt_arrow_button">
<area shape="rect" id="node2" href="class_qwt_arrow_button.html" title="Arrow Button. " alt="" coords="152,5,269,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_3.png" border="0" alt="" usemap="#_qwt_clipper"/>
<map name="_qwt_clipper" id="_qwt_clipper">
<area shape="rect" id="node1" href="class_qwt_clipper.html" title="Some clipping algorithms. " alt="" coords="5,5,92,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_4.png" border="0" alt="" usemap="#_qwt_color_map"/>
<map name="_qwt_color_map" id="_qwt_color_map">
<area shape="rect" id="node1" href="class_qwt_color_map.html" title="QwtColorMap is used to map values into colors. " alt="" coords="5,31,109,57"/>
<area shape="rect" id="node2" href="class_qwt_alpha_color_map.html" title="QwtAlphaColorMap varies the alpha value of a color. " alt="" coords="159,5,297,32"/>
<area shape="rect" id="node3" href="class_qwt_linear_color_map.html" title="QwtLinearColorMap builds a color map from color stops. " alt="" coords="157,56,299,83"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_5.png" border="0" alt="" usemap="#_qwt_column_rect"/>
<map name="_qwt_column_rect" id="_qwt_column_rect">
<area shape="rect" id="node1" href="class_qwt_column_rect.html" title="Directed rectangle representing bounding rectangle and orientation of a column. " alt="" coords="5,5,124,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_6.png" border="0" alt="" usemap="#_qwt_column_symbol"/>
<map name="_qwt_column_symbol" id="_qwt_column_symbol">
<area shape="rect" id="node1" href="class_qwt_column_symbol.html" title="A drawing primitive for columns. " alt="" coords="5,5,141,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_7.png" border="0" alt="" usemap="#_qwt_compass_rose"/>
<map name="_qwt_compass_rose" id="_qwt_compass_rose">
<area shape="rect" id="node1" href="class_qwt_compass_rose.html" title="Abstract base class for a compass rose. " alt="" coords="5,5,140,32"/>
<area shape="rect" id="node2" href="class_qwt_simple_compass_rose.html" title="A simple rose for QwtCompass. " alt="" coords="188,5,364,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_8.png" border="0" alt="" usemap="#_qwt_curve_fitter"/>
<map name="_qwt_curve_fitter" id="_qwt_curve_fitter">
<area shape="rect" id="node1" href="class_qwt_curve_fitter.html" title="Abstract base class for a curve fitter. " alt="" coords="5,31,116,57"/>
<area shape="rect" id="node2" href="class_qwt_spline_curve_fitter.html" title="A curve fitter using cubic splines. " alt="" coords="173,5,320,32"/>
<area shape="rect" id="node3" href="class_qwt_weeding_curve_fitter.html" title="A curve fitter implementing Douglas and Peucker algorithm. " alt="" coords="164,56,329,83"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_9.png" border="0" alt="" usemap="#_qwt_date"/>
<map name="_qwt_date" id="_qwt_date">
<area shape="rect" id="node1" href="class_qwt_date.html" title="A collection of methods around date/time values. " alt="" coords="5,5,80,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_10.png" border="0" alt="" usemap="#_qwt_dial_needle"/>
<map name="_qwt_dial_needle" id="_qwt_dial_needle">
<area shape="rect" id="node1" href="class_qwt_dial_needle.html" title="Base class for needles that can be used in a QwtDial. " alt="" coords="5,56,119,83"/>
<area shape="rect" id="node2" href="class_qwt_compass_magnet_needle.html" title="A magnet needle for compass widgets. " alt="" coords="167,5,359,32"/>
<area shape="rect" id="node3" href="class_qwt_compass_wind_arrow.html" title="An indicator for the wind direction. " alt="" coords="178,56,347,83"/>
<area shape="rect" id="node4" href="class_qwt_dial_simple_needle.html" title="A needle for dial widgets. " alt="" coords="185,107,340,133"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_11.png" border="0" alt="" usemap="#_qwt_dyn_grid_layout"/>
<map name="_qwt_dyn_grid_layout" id="_qwt_dyn_grid_layout">
<area shape="rect" id="node2" href="class_qwt_dyn_grid_layout.html" title="The QwtDynGridLayout class lays out widgets in a grid, adjusting the number of columns and rows to th..." alt="" coords="125,5,260,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_12.png" border="0" alt="" usemap="#_qwt_event_pattern"/>
<map name="_qwt_event_pattern" id="_qwt_event_pattern">
<area shape="rect" id="node2" href="class_qwt_magnifier.html" title="QwtMagnifier provides zooming, by magnifying in steps. " alt="" coords="196,56,296,83"/>
<area shape="rect" id="node4" href="class_qwt_picker.html" title="QwtPicker provides selections on a widget. " alt="" coords="205,5,287,32"/>
<area shape="rect" id="node7" href="class_qwt_plot_direct_painter.html" title="Painter object trying to paint incrementally. " alt="" coords="173,157,319,184"/>
<area shape="rect" id="node8" href="class_qwt_plot_renderer.html" title="Renderer for exporting a plot to a document, a printer or anything else, that is supported by QPainte..." alt="" coords="184,208,308,235"/>
<area shape="rect" id="node9" href="class_qwt_plot_rescaler.html" title="QwtPlotRescaler takes care of fixed aspect ratios for plot scales. " alt="" coords="185,107,307,133"/>
<area shape="rect" id="node3" href="class_qwt_plot_magnifier.html" title="QwtPlotMagnifier provides zooming, by magnifying in steps. " alt="" coords="367,56,489,83"/>
<area shape="rect" id="node5" href="class_qwt_plot_picker.html" title="QwtPlotPicker provides selections on a plot canvas. " alt="" coords="375,5,481,32"/>
<area shape="rect" id="node6" href="class_qwt_plot_zoomer.html" title="QwtPlotZoomer provides stacked zooming for a plot widget. " alt="" coords="537,5,653,32"/>
<area shape="rect" id="node10" href="class_qwt_event_pattern.html" title="A collection of event patterns. " alt="" coords="5,5,125,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_13.png" border="0" alt="" usemap="#_qwt_event_pattern_1_1_key_pattern"/>
<map name="_qwt_event_pattern_1_1_key_pattern" id="_qwt_event_pattern_1_1_key_pattern">
<area shape="rect" id="node1" href="class_qwt_event_pattern_1_1_key_pattern.html" title="A pattern for key events. " alt="" coords="5,5,200,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_14.png" border="0" alt="" usemap="#_qwt_event_pattern_1_1_mouse_pattern"/>
<map name="_qwt_event_pattern_1_1_mouse_pattern" id="_qwt_event_pattern_1_1_mouse_pattern">
<area shape="rect" id="node1" href="class_qwt_event_pattern_1_1_mouse_pattern.html" title="A pattern for mouse events. " alt="" coords="5,5,216,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_15.png" border="0" alt="" usemap="#_qwt_interval"/>
<map name="_qwt_interval" id="_qwt_interval">
<area shape="rect" id="node1" href="class_qwt_interval.html" title="A class representing an interval. " alt="" coords="5,5,93,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_16.png" border="0" alt="" usemap="#_qwt_interval_sample"/>
<map name="_qwt_interval_sample" id="_qwt_interval_sample">
<area shape="rect" id="node1" href="class_qwt_interval_sample.html" title="A sample of the types (x1&#45;x2, y) or (x, y1&#45;y2) " alt="" coords="5,5,140,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_17.png" border="0" alt="" usemap="#_qwt_interval_symbol"/>
<map name="_qwt_interval_symbol" id="_qwt_interval_symbol">
<area shape="rect" id="node1" href="class_qwt_interval_symbol.html" title="A drawing primitive for displaying an interval like an error bar. " alt="" coords="5,5,139,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_18.png" border="0" alt="" usemap="#_qwt_legend_data"/>
<map name="_qwt_legend_data" id="_qwt_legend_data">
<area shape="rect" id="node1" href="class_qwt_legend_data.html" title="Attributes of an entry on a legend. " alt="" coords="5,5,125,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_19.png" border="0" alt="" usemap="#_qwt_null_paint_device"/>
<map name="_qwt_null_paint_device" id="_qwt_null_paint_device">
<area shape="rect" id="node2" href="class_qwt_null_paint_device.html" title="A null paint device doing nothing. " alt="" coords="159,5,299,32"/>
<area shape="rect" id="node3" href="class_qwt_graphic.html" title="A paint device for scalable graphics. " alt="" coords="347,5,439,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_20.png" border="0" alt="" usemap="#_qwt_o_h_l_c_sample"/>
<map name="_qwt_o_h_l_c_sample" id="_qwt_o_h_l_c_sample">
<area shape="rect" id="node1" href="class_qwt_o_h_l_c_sample.html" title="Open&#45;High&#45;Low&#45;Close sample used in financial charts. " alt="" coords="5,5,132,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_21.png" border="0" alt="" usemap="#_qwt_painter"/>
<map name="_qwt_painter" id="_qwt_painter">
<area shape="rect" id="node1" href="class_qwt_painter.html" title="A collection of QPainter workarounds. " alt="" coords="5,5,92,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_22.png" border="0" alt="" usemap="#_qwt_painter_command"/>
<map name="_qwt_painter_command" id="_qwt_painter_command">
<area shape="rect" id="node1" href="class_qwt_painter_command.html" title="QwtPainterCommand" alt="" coords="5,5,156,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_23.png" border="0" alt="" usemap="#_qwt_picker_machine"/>
<map name="_qwt_picker_machine" id="_qwt_picker_machine">
<area shape="rect" id="node1" href="class_qwt_picker_machine.html" title="A state machine for QwtPicker selections. " alt="" coords="5,157,140,184"/>
<area shape="rect" id="node2" href="class_qwt_picker_click_point_machine.html" title="A state machine for point selections. " alt="" coords="188,5,383,32"/>
<area shape="rect" id="node3" href="class_qwt_picker_click_rect_machine.html" title="A state machine for rectangle selections. " alt="" coords="190,56,381,83"/>
<area shape="rect" id="node4" href="class_qwt_picker_drag_line_machine.html" title="A state machine for line selections. " alt="" coords="191,107,380,133"/>
<area shape="rect" id="node5" href="class_qwt_picker_drag_point_machine.html" title="A state machine for point selections. " alt="" coords="188,157,383,184"/>
<area shape="rect" id="node6" href="class_qwt_picker_drag_rect_machine.html" title="A state machine for rectangle selections. " alt="" coords="190,208,381,235"/>
<area shape="rect" id="node7" href="class_qwt_picker_polygon_machine.html" title="A state machine for polygon selections. " alt="" coords="193,259,377,285"/>
<area shape="rect" id="node8" href="class_qwt_picker_tracker_machine.html" title="A state machine for indicating mouse movements. " alt="" coords="194,309,377,336"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_24.png" border="0" alt="" usemap="#_qwt_pixel_matrix"/>
<map name="_qwt_pixel_matrix" id="_qwt_pixel_matrix">
<area shape="rect" id="node2" href="class_qwt_pixel_matrix.html" title="A bit field corresponding to the pixels of a rectangle. " alt="" coords="132,5,243,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_25.png" border="0" alt="" usemap="#_qwt_plot_dict"/>
<map name="_qwt_plot_dict" id="_qwt_plot_dict">
<area shape="rect" id="node2" href="class_qwt_abstract_legend.html" title="Abstract base class for legend widgets. " alt="" coords="144,56,283,83"/>
<area shape="rect" id="node4" href="class_qwt_plot.html" title="A 2&#45;D plotting widget. " alt="" coords="179,5,247,32"/>
<area shape="rect" id="node5" href="class_qwt_plot_canvas.html" title="Canvas of a QwtPlot. " alt="" coords="156,107,271,133"/>
<area shape="rect" id="node6" href="class_qwt_text_label.html" title="A Widget which displays a QwtText. " alt="" coords="160,157,267,184"/>
<area shape="rect" id="node3" href="class_qwt_legend.html" title="The legend widget. " alt="" coords="347,56,438,83"/>
<area shape="rect" id="node7" href="class_qwt_legend_label.html" title="A widget representing something on a QwtLegend. " alt="" coords="331,157,455,184"/>
<area shape="rect" id="node8" href="class_qwt_plot_dict.html" title="A dictionary for plot items. " alt="" coords="5,5,96,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_26.png" border="0" alt="" usemap="#_qwt_plot_g_l_canvas"/>
<map name="_qwt_plot_g_l_canvas" id="_qwt_plot_g_l_canvas">
<area shape="rect" id="node2" href="class_qwt_plot_g_l_canvas.html" title="An alternative canvas for a QwtPlot derived from QGLWidget. " alt="" coords="147,5,280,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_27.png" border="0" alt="" usemap="#_qwt_plot_item"/>
<map name="_qwt_plot_item" id="_qwt_plot_item">
<area shape="rect" id="node1" href="class_qwt_abstract_series_store.html" title="Bridge between QwtSeriesStore and QwtPlotSeriesItem. " alt="" coords="5,182,169,209"/>
<area shape="rect" id="node2" href="class_qwt_plot_series_item.html" title="Base class for plot items representing a series of samples. " alt="" coords="274,233,406,260"/>
<area shape="rect" id="node11" href="class_qwt_series_store.html" title="Class storing a QwtSeriesData object. " alt="" coords="265,182,415,209"/>
<area shape="rect" id="node12" href="class_qwt_series_store.html" title="QwtSeriesStore\&lt; QPointF \&gt;" alt="" coords="246,30,434,57"/>
<area shape="rect" id="node13" href="class_qwt_series_store.html" title="QwtSeriesStore\&lt; QwtInterval\lSample \&gt;" alt="" coords="243,284,437,326"/>
<area shape="rect" id="node14" href="class_qwt_series_store.html" title="QwtSeriesStore\&lt; QwtOHLCSample \&gt;" alt="" coords="217,132,463,158"/>
<area shape="rect" id="node15" href="class_qwt_series_store.html" title="QwtSeriesStore\&lt; QwtPoint3D \&gt;" alt="" coords="235,81,445,108"/>
<area shape="rect" id="node16" href="class_qwt_series_store.html" title="QwtSeriesStore\&lt; QwtSetSample \&gt;" alt="" coords="511,350,740,377"/>
<area shape="rect" id="node3" href="class_qwt_plot_abstract_bar_chart.html" title="Abstract base class for bar chart items. " alt="" coords="541,198,710,225"/>
<area shape="rect" id="node6" href="class_qwt_plot_curve.html" title="A plot item, that represents a series of points. " alt="" coords="573,46,677,73"/>
<area shape="rect" id="node7" href="class_qwt_plot_histogram.html" title="QwtPlotHistogram represents a series of samples, where an interval is associated with a value ( &#160;)..." alt="" coords="561,249,690,276"/>
<area shape="rect" id="node8" href="class_qwt_plot_interval_curve.html" title="QwtPlotIntervalCurve represents a series of samples, where each value is associated with an interval ..." alt="" coords="552,300,699,326"/>
<area shape="rect" id="node9" href="class_qwt_plot_spectro_curve.html" title="Curve that displays 3D points as dots, where the z coordinate is mapped to a color. " alt="" coords="550,97,701,124"/>
<area shape="rect" id="node10" href="class_qwt_plot_trading_curve.html" title="QwtPlotTradingCurve illustrates movements in the price of a financial instrument over time..." alt="" coords="549,148,701,174"/>
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<area shape="rect" id="node18" href="class_qwt_plot_grid.html" title="A class which draws a coordinate grid. " alt="" coords="293,553,387,580"/>
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<area shape="rect" id="node20" href="class_qwt_plot_marker.html" title="A class for drawing markers. " alt="" coords="285,654,395,681"/>
<area shape="rect" id="node21" href="class_qwt_plot_raster_item.html" title="A class, which displays raster data. " alt="" coords="274,705,406,732"/>
<area shape="rect" id="node23" href="class_qwt_plot_scale_item.html" title="A class which draws a scale inside the plot canvas. " alt="" coords="276,756,404,782"/>
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<area shape="rect" id="node25" href="class_qwt_plot_svg_item.html" title="A plot item, which displays data in Scalable Vector Graphics (SVG) format. " alt="" coords="281,401,399,428"/>
<area shape="rect" id="node26" href="class_qwt_plot_text_label.html" title="A plot item, which displays a text label. " alt="" coords="275,452,405,478"/>
<area shape="rect" id="node27" href="class_qwt_plot_zone_item.html" title="A plot item, which displays a zone. " alt="" coords="277,502,403,529"/>
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<tr><td><img src="inherit_graph_28.png" border="0" alt="" usemap="#_qwt_plot_layout"/>
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<area shape="rect" id="node1" href="class_qwt_plot_layout.html" title="Layout engine for QwtPlot. " alt="" coords="5,5,113,32"/>
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</td></tr>
<tr><td><img src="inherit_graph_29.png" border="0" alt="" usemap="#_qwt_point3_d"/>
<map name="_qwt_point3_d" id="_qwt_point3_d">
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<tr><td><img src="inherit_graph_30.png" border="0" alt="" usemap="#_qwt_point_mapper"/>
<map name="_qwt_point_mapper" id="_qwt_point_mapper">
<area shape="rect" id="node1" href="class_qwt_point_mapper.html" title="A helper class for translating a series of points. " alt="" coords="5,5,125,32"/>
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<tr><td><img src="inherit_graph_31.png" border="0" alt="" usemap="#_qwt_point_polar"/>
<map name="_qwt_point_polar" id="_qwt_point_polar">
<area shape="rect" id="node1" href="class_qwt_point_polar.html" title="A point in polar coordinates. " alt="" coords="5,5,112,32"/>
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</td></tr>
<tr><td><img src="inherit_graph_32.png" border="0" alt="" usemap="#_qwt_raster_data"/>
<map name="_qwt_raster_data" id="_qwt_raster_data">
<area shape="rect" id="node1" href="class_qwt_raster_data.html" title="QwtRasterData defines an interface to any type of raster data. " alt="" coords="5,5,119,32"/>
<area shape="rect" id="node2" href="class_qwt_matrix_raster_data.html" title="A class representing a matrix of values as raster data. " alt="" coords="167,5,316,32"/>
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</td></tr>
<tr><td><img src="inherit_graph_33.png" border="0" alt="" usemap="#_qwt_sampling_thread"/>
<map name="_qwt_sampling_thread" id="_qwt_sampling_thread">
<area shape="rect" id="node2" href="class_qwt_sampling_thread.html" title="A thread collecting samples at regular intervals. " alt="" coords="131,5,277,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_34.png" border="0" alt="" usemap="#_qwt_scale_arithmetic"/>
<map name="_qwt_scale_arithmetic" id="_qwt_scale_arithmetic">
<area shape="rect" id="node1" href="class_qwt_scale_arithmetic.html" title="Arithmetic including a tolerance. " alt="" coords="5,5,144,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_35.png" border="0" alt="" usemap="#_qwt_scale_div"/>
<map name="_qwt_scale_div" id="_qwt_scale_div">
<area shape="rect" id="node1" href="class_qwt_scale_div.html" title="A class representing a scale division. " alt="" coords="5,5,105,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_36.png" border="0" alt="" usemap="#_qwt_scale_engine"/>
<map name="_qwt_scale_engine" id="_qwt_scale_engine">
<area shape="rect" id="node1" href="class_qwt_scale_engine.html" title="Base class for scale engines. " alt="" coords="5,31,127,57"/>
<area shape="rect" id="node2" href="class_qwt_linear_scale_engine.html" title="A scale engine for linear scales. " alt="" coords="175,5,333,32"/>
<area shape="rect" id="node4" href="class_qwt_log_scale_engine.html" title="A scale engine for logarithmic scales. " alt="" coords="182,56,326,83"/>
<area shape="rect" id="node3" href="class_qwt_date_scale_engine.html" title="A scale engine for date/time values. " alt="" coords="381,5,532,32"/>
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</td></tr>
<tr><td><img src="inherit_graph_37.png" border="0" alt="" usemap="#_qwt_scale_map"/>
<map name="_qwt_scale_map" id="_qwt_scale_map">
<area shape="rect" id="node1" href="class_qwt_scale_map.html" title="A scale map. " alt="" coords="5,5,112,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_38.png" border="0" alt="" usemap="#_qwt_series_data_3_01_q_point_f_01_4"/>
<map name="_qwt_series_data_3_01_q_point_f_01_4" id="_qwt_series_data_3_01_q_point_f_01_4">
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<tr><td><img src="inherit_graph_39.png" border="0" alt="" usemap="#_qwt_series_data_3_01_qwt_interval_sample_01_4"/>
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<tr><td><img src="inherit_graph_40.png" border="0" alt="" usemap="#_qwt_series_data_3_01_qwt_o_h_l_c_sample_01_4"/>
<map name="_qwt_series_data_3_01_qwt_o_h_l_c_sample_01_4" id="_qwt_series_data_3_01_qwt_o_h_l_c_sample_01_4">
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<area shape="rect" id="node3" href="class_qwt_trading_chart_data.html" title="QwtTradingChartData" alt="" coords="495,13,649,39"/>
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</td></tr>
<tr><td><img src="inherit_graph_41.png" border="0" alt="" usemap="#_qwt_series_data_3_01_qwt_point3_d_01_4"/>
<map name="_qwt_series_data_3_01_qwt_point3_d_01_4" id="_qwt_series_data_3_01_qwt_point3_d_01_4">
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</td></tr>
<tr><td><img src="inherit_graph_42.png" border="0" alt="" usemap="#_qwt_series_data_3_01_qwt_set_sample_01_4"/>
<map name="_qwt_series_data_3_01_qwt_set_sample_01_4" id="_qwt_series_data_3_01_qwt_set_sample_01_4">
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<tr><td><img src="inherit_graph_43.png" border="0" alt="" usemap="#_qwt_series_data_3_01_t_01_4"/>
<map name="_qwt_series_data_3_01_t_01_4" id="_qwt_series_data_3_01_t_01_4">
<area shape="rect" id="node1" href="class_qwt_series_data.html" title="Abstract interface for iterating over samples. " alt="" coords="5,5,152,32"/>
<area shape="rect" id="node2" href="class_qwt_array_series_data.html" title="Template class for data, that is organized as QVector. " alt="" coords="200,5,379,32"/>
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</td></tr>
<tr><td><img src="inherit_graph_44.png" border="0" alt="" usemap="#_qwt_set_sample"/>
<map name="_qwt_set_sample" id="_qwt_set_sample">
<area shape="rect" id="node1" href="class_qwt_set_sample.html" title="A sample of the types (x1...xn, y) or (x, y1..yn) " alt="" coords="5,5,116,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_45.png" border="0" alt="" usemap="#_qwt_spline"/>
<map name="_qwt_spline" id="_qwt_spline">
<area shape="rect" id="node1" href="class_qwt_spline.html" title="A class for spline interpolation. " alt="" coords="5,5,88,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_46.png" border="0" alt="" usemap="#_qwt_symbol"/>
<map name="_qwt_symbol" id="_qwt_symbol">
<area shape="rect" id="node1" href="class_qwt_symbol.html" title="A class for drawing symbols. " alt="" coords="5,5,96,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_47.png" border="0" alt="" usemap="#_qwt_system_clock"/>
<map name="_qwt_system_clock" id="_qwt_system_clock">
<area shape="rect" id="node1" href="class_qwt_system_clock.html" title="QwtSystemClock provides high resolution clock time functions. " alt="" coords="5,5,131,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_48.png" border="0" alt="" usemap="#_qwt_text"/>
<map name="_qwt_text" id="_qwt_text">
<area shape="rect" id="node1" href="class_qwt_text.html" title="A class representing a text. " alt="" coords="5,5,79,32"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_49.png" border="0" alt="" usemap="#_qwt_text_engine"/>
<map name="_qwt_text_engine" id="_qwt_text_engine">
<area shape="rect" id="node1" href="class_qwt_text_engine.html" title="Abstract base class for rendering text strings. " alt="" coords="5,56,120,83"/>
<area shape="rect" id="node2" href="class_qwt_math_m_l_text_engine.html" title="Text Engine for the MathML renderer of the Qt solutions package. " alt="" coords="168,5,329,32"/>
<area shape="rect" id="node3" href="class_qwt_plain_text_engine.html" title="A text engine for plain texts. " alt="" coords="177,56,321,83"/>
<area shape="rect" id="node4" href="class_qwt_rich_text_engine.html" title="A text engine for Qt rich texts. " alt="" coords="179,107,319,133"/>
</map>
</td></tr>
<tr><td><img src="inherit_graph_50.png" border="0" alt="" usemap="#_qwt_transform"/>
<map name="_qwt_transform" id="_qwt_transform">
<area shape="rect" id="node1" href="class_qwt_transform.html" title="A transformation between coordinate systems. " alt="" coords="5,56,112,83"/>
<area shape="rect" id="node2" href="class_qwt_log_transform.html" title="Logarithmic transformation. " alt="" coords="168,5,299,32"/>
<area shape="rect" id="node3" href="class_qwt_null_transform.html" title="Null transformation. " alt="" coords="169,56,298,83"/>
<area shape="rect" id="node4" href="class_qwt_power_transform.html" title="A transformation using pow() " alt="" coords="160,107,307,133"/>
</map>
</td></tr>
</table>
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